|United States Patent||4,301,551|
|Dore , et al.||November 24, 1981|
A tension spring capable of large elastic deformation and having a high resistance to breakage and particularly, but not exclusively, for use as an artificial prosthetic ligament. The spring comprises an elongate elastic core having a low modulus of elasticity and defining opposed ends. A tensionable wrapping of thread having a high resistance to breakage is disposed in contact about the core to compress the core and to cause it to elongate axially upon opposite relative axial displacement of opposed ends of the wrapping secured to traction means.
|Inventors:||Dore; Roland (Montreal, CA), Drouin; Gilbert (l'Acadie, CA)|
|Filed:||July 9, 1979|
|May 24, 1979 [CA]||328441|
|Current U.S. Class:||623/13.13 ; 267/152; 403/223|
|Current International Class:||A61F 2/08 (20060101); A61F 001/00 ()|
|Field of Search:||3/1 267/153,153,148,57.1R,57.1A,154 64/27NM,27R 403/223,221,222,225,226,228,229,291|
|3882551||May 1975||Helmer et al.|
Drovin, et al., "A New Concept for the Design of Prosthesis for Knee Ligament", July, 1977. .
Drovin, et al., "A New Concept for the Design of Prostheses for Ligament Replacements", 1978, Biomechanics, vol. VI-A, p. 395. .
Wevers, "The Specification and Design of a Substitute Medial Collateral Ligament", Digest of the 11.sup.th International Conference on Medical and Biological Engineering; 1976; pp. 494-495..